How could this work? I specify an interface to an api. C Foo(A a) = ... Someone ... | Hacker News

Hacker News new | past | comments | ask | show | jobs | submit

login

jjaredsimpson on June 18, 2018 | parent | context | favorite | on: Railway-Oriented Programming (2015)

How could this work? I specify an interface to an api.

C Foo(A a) = ...

Someone then provides me with some not-A error value. What should I do? What do you mean by implicit.

Consider applying for YC's Spring batch! Applications are open till Feb 11.
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact